MATLAB Central Newsreader - Continuous polling with RS232 Matlab GUI

Continuous polling with RS232 Matlab GUI

jim smith — Fri, 29 Feb 2008 12:05:02 -0500

I've made a GUI in matlab to read data via RS232 and plot
it to a graph. The only problem is I have to keep pressing
a button to send a 'getdata' command to my microcontroller
via RS232 so it sends the data back. I want to implement
this in continuously/real time so I don't have to keep
pressing a button to communicate with my device. I've
written while loops and that just freezes my program, i've
also tried a checkbox so if it's checked it gets data and
that also freezes the GUI.

Just wanted to know if there is a successful way to get
real time data without crashing my program, thanks

Re: Continuous polling with RS232 Matlab GUI

Jason — Fri, 29 Feb 2008 12:08:01 -0500

"jim smith" <jimsmith@mathworks.com> wrote in message
<fq8sde$g79$1@fred.mathworks.com>...
> I've made a GUI in matlab to read data via RS232 and plot
> it to a graph. The only problem is I have to keep
pressing
> a button to send a 'getdata' command to my
microcontroller
> via RS232 so it sends the data back. I want to implement
> this in continuously/real time so I don't have to keep
> pressing a button to communicate with my device. I've
> written while loops and that just freezes my program,
i've
> also tried a checkbox so if it's checked it gets data and
> that also freezes the GUI.
>
> Just wanted to know if there is a successful way to get
> real time data without crashing my program, thanks

Hi Jim, unfortunately I can't help you out but I also am
interested in plotting RS232 transported data would you be
able to share your code with me?
thnaks
Jason

Re: Continuous polling with RS232 Matlab GUI

Ved Vernekar — Sun, 09 Mar 2008 07:38:03 -0400

Jim would you be able to share ur code with me?? im working
on some thing similar my id is vedvern@hotmail.com

Re: Continuous polling with RS232 Matlab GUI

Mick Foo — Sat, 29 Mar 2008 20:46:02 -0400

"jim smith" <jimsmith@mathworks.com> wrote in message
<fq8sde$g79$1@fred.mathworks.com>...
> I've made a GUI in matlab to read data via RS232 and
plot
> it to a graph. The only problem is I have to keep
pressing
> a button to send a 'getdata' command to my
microcontroller
> via RS232 so it sends the data back. I want to implement
> this in continuously/real time so I don't have to keep
> pressing a button to communicate with my device. I've
> written while loops and that just freezes my program,
i've
> also tried a checkbox so if it's checked it gets data
and
> that also freezes the GUI.
>
> Just wanted to know if there is a successful way to get
> real time data without crashing my program, thanks

hi jim, i m doin a similiar gui, can u share wit me ur
codes, i will b very grateful!

Re: Continuous polling with RS232 Matlab GUI

SmartEngineer — Sun, 30 Mar 2008 02:39:01 -0400

"jim smith" <jimsmith@mathworks.com> wrote in message
<fq8sde$g79$1@fred.mathworks.com>...
> I've made a GUI in matlab to read data via RS232 and
plot
> it to a graph. The only problem is I have to keep
pressing
> a button to send a 'getdata' command to my
microcontroller
> via RS232 so it sends the data back. I want to implement
> this in continuously/real time so I don't have to keep
> pressing a button to communicate with my device. I've
> written while loops and that just freezes my program,
i've
> also tried a checkbox so if it's checked it gets data
and
> that also freezes the GUI.
>
> Just wanted to know if there is a successful way to get
> real time data without crashing my program, thanks

You may look at the post "Read Serial Port from RS232
Continuously" under serial port tag.

Hope that helps you.

Re: Continuous polling with RS232 Matlab GUI

Mick Foo — Sun, 30 Mar 2008 09:01:04 -0400

"jim smith" <jimsmith@mathworks.com> wrote in message
<fq8sde$g79$1@fred.mathworks.com>...
> I've made a GUI in matlab to read data via RS232 and
plot
> it to a graph. The only problem is I have to keep
pressing
> a button to send a 'getdata' command to my
microcontroller
> via RS232 so it sends the data back. I want to implement
> this in continuously/real time so I don't have to keep
> pressing a button to communicate with my device. I've
> written while loops and that just freezes my program,
i've
> also tried a checkbox so if it's checked it gets data
and
> that also freezes the GUI.
>
> Just wanted to know if there is a successful way to get
> real time data without crashing my program, thanks

hi jim, i m doin a similiar gui, can u share wit me ur
codes, i will b very grateful! and this my email:
odick85@yahoo.com

Re: Continuous polling with RS232 Matlab GUI

Jeremy — Wed, 09 Apr 2008 21:09:02 -0400

I am working to get an FPGA to communicate through rs232 and
read it into Matlab. If you wouldn't mind sharing your code
or giving some hints on where to start I would appreciate
it so much. Thank you.

Jeremy

email: LukeGlue@hotmail.com